Alfa Laval Patente

A plate heat exchanger comprises a package of heat exchanger plates, each with a peripheral portion and several aligned through flow ports. The plates are permanently joined to form flow passages for two heat exchange media. First inlet and outlet channels communicate with every other flow passage, while second inlet and outlet channels communicate with the remaining passages. First guiding ribs in the port portions distribute the first heat exchange medium, and second guiding ribs do the same for the second medium. Fins in the heat exchange portion create parallel guide channels for both media. A mixing zone is configured between the fins and guiding ribs to equalize volume flow before entering the guide channels. Outermost guiding ribs prevent bypass flow between the plates and fins, ensuring efficient heat exchange.

The present invention relates to a filling system for a cooling tower. The filling system comprising a filling material being permeable to air and water. The filling material being electrically conductive. The filling system further comprising a first electrical connector and a second electrical connector that are operationally connected to the filling material and spaced apart in relation to each other. The filling system further comprising an electrical power source operationally connected to the first electrical connector and the second electrical connector and configured to supply an electric current to the filling material via the first electrical connector and the second electrical connector for reducing growth of microorganisms in the cooling tower.

The present invention provides a centrifugal separator (1) for separating a liquid mixture into at least one separated liquid phase. The separator is comprising a reusable portion (2) arranged for use in multiple separation processes and a single use portion (10) arranged for being replaced between separation processes. The single use portion (10) comprises a separator insert (11) in which the separation takes place, said insert (11) forming a preassembled interchangeable unit, and at least one tube (12) arranged for transporting liquid mixture to said separator insert (11) and/or at least one separated phase from said separator insert (11). The reusable portion (2) comprises a stationary frame (3) in which said separator insert is mounted and a drive unit (4) arranged for rotating said separator insert (11) in relation to the stationary frame (3) around an axis of rotation (X). The centrifugal separator (1) further comprises at least one sensor (20) for measuring a physical property of the liquid feed mixture or a separated liquid phase. The at least one sensor (20, 30) comprises a sensing element (21, 31) that is responsive for said physical property, and a processing unit (22, 32) configured for converting the sensed physical property to an electrical variable. At least said processing unit (22, 32) is arranged in the reusable portion (2) of the centrifugal separator (1).

The present invention provides an oil drain assembly (1) for draining lubricating oil from a centrifugal separator (2), comprising a centrifugal separator (2) comprising a drive motor (14); wherein said drive motor (14) comprises a drain hole (41) for lubricating oil; a container (20) for storing drained lubricating oil comprising an oil inlet (21); and a connecting portion (25) comprising a first end (26) adapted for connection to the drain hole (41) of said drive motor (14); a second end (27) adapted for being directly connected to the oil inlet (21) of the container (20) and a valve member (28) arranged between the first (26) and second (27) end (27) for regulating the flow of lubricating oil within said connecting portion (25). The connecting portion (25) is arranged for being permanently connected to said drain hole (41) and directly connected to said container (20).

The present invention relates to a method of operating and maintaining a piece of marine machine equipment. The piece of marine machine equipment is connected to a local processor. The method comprising the steps of obtaining a set of training data specific to the piece of marine machine equipment and training a Small Language Model (SLM) with the set of training data specific to the piece of marine machine equipment. The method further comprising the step of executing the trained SLM on the local processor to provide an operational advice for the piece of marine machine equipment wherein the SLM operates offline and utilizes real-time data obtained from the piece of marine machine equipment.

A gas combustion arrangement (100) and method for combusting ammonia originating from an ammonia handling system of a marine vessel is provided. The arrangement comprises a combustion chamber (110) comprising a combustion zone (112) and a dilution zone (114), a primary burner (120) configured to combust a primary fuel feed, comprising the ammonia, in the combustion zone, an air supply system (130) configured to provide a combustion air flow to the primary burner and a dilution air flow to the dilution zone, and a secondary burner (140) configured to combust a secondary fuel feed to provide a support flame supporting the combustion of the primary fuel feed.

The present invention relates to a method of producing a spirally wound filtration module for filtrating a fluid feed into a retentate portion and a permeate portion. The method comprises the step of stacking membrane filtration assemblies and permeate transfer layers on top of each other where each membrane filtration assembly being located between two permeate transfer layers starting with a first permeate transfer layer and ending with a final permeate transfer layer. The leading edges of the membrane filtration assemblies are facing the permeate tube and being sequentially offset. The final permeate transfer layer covers all the leading edges of the membrane filtration assemblies. The method comprises the step of rolling the membrane filtration assemblies and the permeate transfer layers around the permeate tube forming the filtration module.

The disclosure relates to a tank cleaning system (1) comprising: a tank cleaning device (2) comprising at least one controllable spraying nozzle (4) for spraying the interior of a first tank (6) with a cleaning fluid (8); an actuator (14) connected to the at least one spraying nozzle (4) for changing the position of the at least one spraying nozzle (4) in relation to the interior of the first tank (6); and a control device (200) configured to control the movement of the actuator (14), and thus the position of the at least one spraying nozzle (4), based on data (D) related to at least one interior feature of the first tank (6). The control device (200) is configured to control the movement of the actuator (14) further based on data (D) related to surrounding conditions (20, 22, CO, T1, T2) adjacent to the first tank (6). The disclosure further relates to a tank storage system (32), a ship (28), a method for cleaning a first tank (6) by a tank cleaning system (1), a computer program (P) stored on a computer-readable medium (202) and and a computer-readable medium (202) having stored thereon the computer program (P).

The present invention provides a fuel atomizing nozzle (1) for handling at least two fuels and an atomizing fluid, the fuel atomizing nozzle (1) comprising a solid body (10) having a mainly cylindrical shape around a longitudinal axis (X) defining a first end (11), a second end (12) and a contour surface (16) extending there between connecting the two ends (11, 12), wherein the first end (11) comprises at least one outlet (17), wherein the fuel atomizing nozzle (1) further comprises a fluid compartment (14) being arranged centrally around the longitudinal axis (X) in the solid body (10), at least a first and a second fuel compartment (15a, 15b) being arranged in a radial plane between the fluid compartment (14) and the contour surface (16), the fuel compartments (15a, 15b) having an annular shape, the at least first and second fuel compartments (15a, 15b) being connected to a pre-filling chamber (35) by at least a first and a second fuel channel (25a, 25b), respectively, at least one mixing chamber (40) being arranged between the fluid compartment (14) and the at least one outlet (17), and a fluid channel (24) connecting the at least one mixing chamber (40) and the fluid compartment (14), wherein the pre-filling chamber (35) has an annular shape, and the pre-filling chamber (35) is connected via a pre-filling channel (45) to the at least one mixing chamber (40).

The present disclosure relates to a method of providing for maintenance of a separator (1), and a separator (1) performing the method. The method comprises determining (S101) operational modes in which the separator (1) is controlled to operate upon performing separation processes, storing (S102) information as to which operational modes are performed by the separator, evaluating (S103) the stored information for scheduling a maintenance action to be performed on the separator (1) based on the performed operational modes, and alerting (S104) an operator (41) of the separator (1) of the scheduled maintenance action to be performed on the separator (1).

The present invention provides a method (100) for separating a liquid feed mixture into at least one separated phase in a centrifugal separator (1) comprising a centrifuge bowl (10). The method (100) is comprising the steps of a) rotating (101) the centrifuge bowl (3); b) supplying (102) said liquid feed mixture to the centrifuge bowl (3); c) separating (103) said liquid feed mixture in the centrifuge bowl (3) into at least one separated phase; d) discharging (104) said at least one separated phase from the centrifuge bowl (10); e) deaerating (105) a portion of the liquid feed mixture and/or a portion of a discharged separated phase to provide a deaerated portion; and f) measuring (106) the density, turbidity or a physical property related to the solids concentration, or any combination thereof, of the deaerated portion.

A gas combustion system (100) for a marine vessel is disclosed, comprising a burner (110) for combusting a fuel feed comprising boil-off gas, a combustion feed subsystem (120) for supplying the burner with the fuel feed and air for the combustion, a heat exchange element (130) for absorbing thermal energy from exhaust gases produced by the combustion of the fuel feed, and an energy recycling subsystem (140) for receiving the thermal energy from the heat exchange element. The energy recycling subsystem is operable in at least one of an internal mode in which the energy recycling subsystem powers the combustion feed subsystem, and an external mode in which the energy recycling subsystem transfers energy to a vessel subsystem (160) external to the gas combustion system.

The present invention relates to a shaft fixture arrangement (100) for releasably fixing a rotary shaft (12) of an agitator system (10) in relation to an opening (52) in a vessel (50). The shaft fixture arrangement (100) comprising: two or more fixture elements (102) configured to jointly fix the rotary shaft (12) in relation to the opening (52) by engaging the rotary shaft (12) such that the rotary shaft (12) is clamped between the two or more fixture elements (102). Each fixture element (102) comprising, an inwardly facing circumferentially extending shaft clamping surface (104) configured to abut an outer circumferentially extending surface portion (12a) of the rotary shaft, and an outwardly facing circumferentially extending opening abutment surface configured to abut an inwardly facing surface portion (52a) surrounding the opening. A system (20) and a method of for releasably fixing a rotary shaft (12) of an agitator system (1) are also provided.

The present invention relates to a bearing housing (100) for receiving and rotationally supporting a rotary shaft (12) of an agitator system (10) in relation to an opening (52) in a vessel (50). The bearing housing (100) comprising: a body (102) comprising a shaft aperture (104) configured to receive the rotary shaft (12) and being at least partially defined by an internal surface (110) configured to rotationally support the rotary shaft (12) via one or more bearings. The bearing housing (100) comprises two or more protrusions (120) protruding from a first end portion (106) and being circumferentially distributed around the shaft aperture (102), each protrusion (120) comprising an abutment surface (122) facing away from the first end portion (106) and being configured to abut an outer surface portion (56) associated with the vessel (50), such that a radially extending passage (121) allowing access to the rotary shaft (12) is formed between adjacent protrusions (120) when the abutment surfaces (122) abut the outer surface portion (56) associated with the vessel (50).

The present invention relates to a service tool (100) for translating a rotary shaft assembly (20) of an agitator system (10) in relation to a bearing housing (30) supporting the rotary shaft assembly (20). The service tool (100) comprises a tool (110) body, a shaft assembly attachment bracket (150) configured to be releasably attached to an end portion of the rotary shaft assembly (20), and a translation unit (180) configured to, when actuated, translate the shaft assembly attachment bracket (150) in relation to the tool body (100) along a translation axis (TA). The tool body (110) comprises a radially inwardly facing support surface (120) extending along an axial direction (AD), the support surface (120) being circumferentially distributed about the translation axis (TA) and being configured to slidingly bear against the rotary shaft assembly (20) while translating the rotary shaft assembly (20) in relation to the bearing housing (30) along the translation axis (TA), such that a radial displacement of the rotary shaft assembly (20) is counteracted. A service arrangement (200) and a method (300) of translating a rotary shaft assembly (20) of an agitator system (10) in relation to a bearing housing (30) are also provided

The present invention relates to a service tool (100) for translating a rotary shaft assembly (20) of an agitator system (10) in relation to a bearing housing (30) supporting the rotary shaft assembly (20). The service tool (100) comprises a tool (110) body, a shaft assembly attachment bracket (150) configured to be releasably attached to an end portion of the rotary shaft assembly (20), and a translation unit (180) configured to, when actuated, translate the shaft assembly attachment bracket (150) in relation to the tool body (100) along a translation axis (TA). The coupling arrangement (120) comprises at least one tool coupling detail (124) connected to the tool body (110) and configured to releasably engage a bearing housing coupling detail (34) of the bearing housing (30). The tool coupling detail (124) is movable along a axial direction (AD) in relation to the tool body (110) such that an abutment surface (112a) of the tool body (110) is biased against a support surface (32) of the bearing housing (30) in response to moving the tool coupling detail (124) along the axial direction (AD) while the tool coupling detail (124) engages the bearing housing coupling detail (34). A service arrangement (200) and a method (300) of translating a rotary shaft assembly (20) of an agitator system (10) in relation to a bearing housing (30) are also provided

The present invention relates to a separation tool (100) for separating a drive unit (11) from a rotary shaft assembly (20) of an agitator system (10). The tool (100) comprises a first bracket (102) configured to be attached to, or being integrally formed with, one of the drive unit (11) and the rotary shaft assembly (20), and a second bracket (152) configured to be attached to, or being integrally formed with, the other one of the drive unit (11) and the rotary shaft assembly (20). The first bracket (102) is movably connected to the second bracket (152). The tool (100) comprises a longitudinal gear assembly (120) configured to, when actuated, move the first bracket (102) in relation to the second bracket (152) along a longitudinal axis (LA) of a connection shaft (104) movably connecting the first and second brackets (102, 152). The tool comprises a rotational gear assembly (130) configured to, when actuated, rotate the first bracket (102) in relation to the second bracket (152) about the longitudinal axis (LA).

The present invention relates to a seal cartridge (100) for sealing an interface between an opening (52) in a vessel (50) and a rotary shaft (12) of an agitator system (10). The seal cartridge (100) comprises a cartridge housing (102) comprising a radially outer surface (105) configured to abut an inwardly facing surface (22) of a bearing housing (20) for radially supporting the seal cartridge (100) in the bearing housing (20). The seal cartridge (100) comprises an inlet and an outlet flush fluid connector (150, 160) configured to pass a flush fluid for flushing an interface between a non-rotary sealing element (122) and a rotary sealing element (124) of a rotary seal (120). A connection section (154, 164) of one or more of the inlet and outlet flush fluid connector (150, 160) is movable between a flush position (FP) in which the connection section (154, 164) extends radially beyond a footprint area (FA) defined by the radially outer surface (105), and a service position (SP) in which the connection section (154, 164) is radially inside of the footprint area (FA). An agitator system (10), a mixing arrangement (1) and methods (200, 300, 400) system are also provided.

The present invention relates to a seal cartridge (100) for sealing an interface between an opening (52) in a vessel (50) and a rotary shaft (12) of an agitator system (10) extending into the vessel (50) through the opening (52). The seal cartridge (100) comprises a cartridge housing (102), an inner sleeve (110) rotationally coupled to the cartridge housing (102) configured to receive the rotary shaft (12) along an axial direction (AD) thereof and to co-rotate with the rotary shaft (12), and a rotary seal (120). A first end portion (110a) of the inner sleeve (110) comprises an axially facing stop surface (111) configured to interact with an axially facing stop step (13) of the rotary shaft (12), such that the seal cartridge (100) co-translates with the rotary shaft (12) in the axial direction (AD) in response to an axial translation of the radially extending stop step (13). An agitator system (10) and a mixing arrangement (1) for mixing a liquid product (2) are also provided.

The present invention relates to an impeller (100, 200) for an agitator system (10), comprising a rotary hub (102, 202) and two or more impeller blades (104, 204). Each impeller blade (104, 204) comprises an inner blade section (104a, 204a) of a non-uniform material thickness (T) connected to the rotary hub (102, 202) and an outer blade section (104b, 204b) of sheet metal. The outer blade section (104b, 204b) is attached to the inner blade section (104a, 204a) by being welded edge-to-edge. An agitator system (10) comprising an impeller (100, 200) and methods of forming an impeller (100, 200) for an agitator system (10) are also provided.

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The present invention provides a centrifugal separator (1) for separating a liquid mixture into at least a light phase and a heavy phase. The separator comprises a centrifuge bowl (5) and a drive member (3) for rotating the centrifuge bowl around an axis of rotation (X). The centrifuge bowl (5) further comprises an inlet (14) for receiving the liquid mixture, a first outlet (7) for said separated light phase and a second outlet (6) for said separated heavy phase, and wherein the centrifuge bowl (5) encloses a separation space (9a) and a sludge space (9b). The separation space (9a) further comprises a stack (10) of separation discs arranged coaxially around the axis of rotation (X) and wherein the sludge space (9b) is arranged radially outside the stack (10) of separation discs. The centrifuge bowl (5) further comprises at least one outlet conduit (30) for transport of heavy phase from said sludge space (9b) to the second outlet (6). At least one outlet conduit (30) is arranged at least with a portion within the stack (10) of separation discs.

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Herein a base unit (4) and a modular centrifugal separator (2) are disclosed. The base unit (4) comprises a stationary frame (8), a rotatable member (16), and a drive unit (18). The rotatable member (16) delimits an inner space (26) being configured for receiving at least one part of an exchangeable separation insert (6) therein. The rotatable member (16) is provided with a first opening (28) at a first axial end (22) configured for a first fluid connection (94) of the exchangeable separation insert (6) to extend through the first opening (28). The rotatable member (16) comprises a second opening (30) at a second axial end (24) configured for a second fluid connection (96) of the exchangeable separation insert (6) to extend through the second opening (30).

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The disclosure concerns a centrifugal separator (2) comprising a bowl (4), a housing (12), a stationary liquid passage device (14), and a sealing arrangement (18). A first axial end face (32) of a first seal member (28) is arranged in the stationary liquid passage device (14) and a first sealing surface (30) is arranged in the bowl (4). A second axial end face (38) of a second seal member (34) is arranged in the stationary liquid passage device (14) and a second sealing surface (36) is arranged in the bowl (4). The respective end faces (32, 38) and surfaces (30, 36) are positioned in sealing abutment. The second seal member (34) is separate from the first seal member (28) and the first and second seal members (28, 34) are separable from the first and second sealing surfaces (30, 36) with a release of the stationary liquid passage device (14) from the housing (12).

The disclosure relates to a plate heat exchanger (1) comprising: a package of heat exchanger plates (2), each having a peripheral portion (4) and several port portions (6a,6b) with through flow ports (8a,8b); wherein the heat exchanger plates (2) are permanently joined to adjacent heat exchanger plates (2) of the package along their peripheral portions (4) in such manner that they leave flow passages (12) in a heat exchange portion (14) between adjacent heat exchanger plates (2). The through flow ports (8a,8b) of the heat exchanger plates (2) are aligned and form first inlet and outlet channels (16a,16b) through the package for a first heat exchange medium (18), which communicate with every other flow passage (12) between the heat exchanger plates (2), and second inlet and outlet channels (20a,20b) through the package for a second heat exchange medium (22), which communicate with remaining flow passages (12) between the heat exchanger plates (2). Fins (32) are arranged in the heat exchange portion (14) of the flow passages (12) between the adjacent heat exchanger plates (2), which fins (32) creates a number of parallel guide channels (34) for each of the first and second heat exchange medium (18,22), respective.

The present invention relates to a plate for a heat exchanger for heat exchange between a first medium and a second medium, the plate defines a heat transfer area comprising a corrugated heat transfer pattern of alternately arranged ridges and valleys. The heat transfer area defining a first heat exchange surface for the first medium and an opposite second heat exchange surface for the second medium. The first heat exchange surface defines a meandering flow path for the first medium The meandering flow path is divided into an upper flow channel extending transversally in an upper part of the first heat exchange surface, a lower flow channel transversally in a lower part of the first heat exchange surface and at least one intermediate flow channel extending transversally in an intermediate part of the first heat exchange surface between the upper flow channel and the lower flow channel.

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The present invention provides a method for determining if air is trapped within a centrifugal separator (100). The separator comprises a stationary frame (30), a rotatable assembly (101) and a drive unit (34) for rotating the rotatable assembly (101) relative the frame (30) around an axis of rotation (X); and further a feed inlet (20) for supply of a liquid mixture to be separated, a first liquid outlet (21) for discharge of a separated liquid phase and a second liquid outlet (22) for discharge of a heavy phase having a density that is higher than said liquid phase; wherein the rotatable assembly (101) comprises a rotor casing (2) enclosing a separation space (17) in which a stack (19) of separation discs is arranged to rotate around a vertical axis (X) of rotation. The method comprises the steps of a) closing one of the first (21) and second (22) liquid outlets and restricting the flow from the other outlet; b) supplying feed to the feed inlet (20) and measuring the flow to the feed inlet (20) and the flow from the restricted outlet (21,22); c) comparing the flow as a function of time between feed inlet (20) and the restricted outlet (21,22); and d) determining that air is trapped within the centrifugal separator (100) if the measured flow as a function of time flow deviates between feed inlet (20) and the restricted outlet (21,22).

The present invention provides a centrifugal separator (1) for separating at least one liquid phase from a liquid feed mixture. The separator is comprising a rotatable portion (10), a stationary portion (2) and a drive motor (4) arranged for rotating the rotatable portion (10) relative said stationary portion (2) around an axis of rotation (X). The rotatable portion (10) comprises a centrifuge bowl (10a) and a rotatable shaft (7) onto which said centrifuge bowl (10) is mounted. The centrifuge bowl (10a) comprises a separation space (9a), in which surface enlarging inserts (17) are arranged, an inlet (11) for supply of the liquid feed mixture, at least one liquid outlet (12, 13) for discharge of a separated liquid phase. At least one bearing (5, 6) is mounted to the rotatable portion (10) to facilitate its rotation, wherein said at least one bearing (5,6) is a grease-lubricated bearing.

The present invention provides a centrifugal separator (1) for separating at least one liquid phase from a liquid feed mixture. The separator (1) comprises a rotatable portion (10), a stationary portion (2) and a drive motor (4) arranged for rotating the rotatable portion (10) relative said stationary portion (2) around an axis of rotation (X). The rotatable portion (10) comprises a centrifuge bowl (10a) and a rotatable shaft (7) onto which said centrifuge bowl (10) is mounted. The centrifuge bowl (10a) comprises a separation space (9a), in which surface enlarging inserts (17) are arranged, an inlet (11) for supply of the liquid feed mixture, at least one liquid outlet (12, 13) for discharge of a separated liquid phase. Further, at least one bearing (5, 6) is mounted to the rotatable portion (10) to facilitate its rotation, wherein said at least one bearing (5,6) comprises a plurality of ceramic bearing elements (51).